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P1636 Diagnostic Trouble Code Discussion for December 2008

TCM Internal - External Watchdog Performance

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Trouble Ticket Help Requests for DTC P1636
Help Request Posted
2002 Toyota Prius 1.5L MIL Lamp on VIN: JT2BK12U52
P1636: HV ECU Malfunction. Hello hybrid masters.We have this 1/4 million mile golf cart in our shop with a string of codes and not charging the hV battery.I proceeded with diagnostics for code 1639 HV ecu fault by hooking up a labscope at ecm terminals of the engine ecm HTe+ and HTE- an...
December 02, 2008